import type { ValidationIssue } from '../types';
export declare function isAbsoluteExtensionUrl(url: string): boolean;
export declare function shouldReportUnresolvableExtensionUrl(url: string): boolean;
export declare function validateExtensionStructure(extension: any, extensionType: string, path: string, resourceType?: string): ValidationIssue[];
export declare function validateExtensionValueType(extension: any, allowedTypes: string[], path: string, resourceType?: string): ValidationIssue[];
export declare function validateKnownHl7ExtensionValueType(extension: any, path: string, resourceType?: string): ValidationIssue[];
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